<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <!--使用Thymeleaf视图,所有的HTML标签必须封闭即完整的双标签或者单边签 -->
    <meta charset="UTF-8" />
    <title>Title</title>
</head>
<body>
ID：<span th:text="${admin.id}" /> <br/>
USERNAME：<span th:text="${admin.username}" />
</body>
</html>